Until you get down to the noise floor isn't it always the sum (in dB) of the
rejection?
Wes N7WS
On 3/31/2020 8:52 PM, Jim Brown wrote:
On 3/31/2020 8:36 PM, Don Wilhelm wrote:
What the roofing filters will do is keep the receiver from reducing the
hardware AGC for stations which are within the roofing filter passband.
In addition, when the DSP IF filters are set to about the same width as the
roofing filters, the two filters "cascade" -- the rejection of adjacent
signals is the sum of the rejection of the two filters.
73, Jim K9YC
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